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Business Segment Information - Narrative (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Oct. 08, 2019
USD ($)
Apr. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Dec. 31, 2019
USD ($)
Segment
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Jun. 30, 2018
Segment Reporting [Abstract]              
Number of reportable segments | Segment       2      
Segment Reporting Information [Line Items]              
Purchase price, net of cash acquired       $ 0 $ 0 $ 59,798  
Nobles Worldwide, Inc.              
Segment Reporting Information [Line Items]              
Equity interest acquired 100.00%     100.00%      
Purchase price, net of cash acquired $ 77,000            
Gross purchase price $ 77,305            
Certified Thermoplastics Co., LLC              
Segment Reporting Information [Line Items]              
Equity interest acquired   100.00%         100.00%
Purchase price, net of cash acquired   $ 30,700          
Gross purchase price   $ 30,800          
Lightning Diversion Systems, Inc.              
Segment Reporting Information [Line Items]              
Equity interest acquired     100.00%        
Purchase price, net of cash acquired     $ 60,000        
Gross purchase price     $ 62,000